Error 7 means that something has gone wrong in the pairing between your phone and your Beeline. If you see Error 7 appear on your screen, follow these steps:
1. Quit the Beeline app
2. 'Forget' your Beeline in your phone's Bluetooth settings
3. Re-launch the Beeline app
4. Allow for your app to search for and pair with your Beeline
...you should be good to go! Get in touch at email@example.com if that's not the fix and you need any more tips.